Truss



W. A. BARROWS.

TRUSS.

APPLICATION FILED APII.-2I, 1919.

Patented Mai'. .7, 1922.

panying drawings wherein I TES WALTER A. BAE/ROWS, 0F BELVIDERE,

iLLiiiois.

TRUSS.

Application tiled April 21,

To all ui/iam it may con cern.'

e it known that l. l/VALrnn il. linnows,

a citizen of the United States7 residing` at elvidere, in the county oi" Boone and State of Illinois, have invented certain new and useful Improvements in Trusses, of which the following is a speciiicatioii.

l y invention relates to improvements in trusses and has for its general objects to provide an improved and simple construction for tliereliable and eilicient application ot requisite pressure with maximum comfort to e wearer, to attain simplicity, economy and durability in construction, and to ailiord I adjustmentto insure cxact application of the pressure over t' sired area and with the front pressure pads angularly positioned lor best results.

y invention consists in the .features of construction and arrangement of parts hereinafter claimed7 and may satisfactorily be embodied in the formv shown in the accomhave illustrated only a single construction involvingl the invention for purposes of disclosure.

In the drawings Fig. 1 is a front elevation f a truss embodying my invention; Fig. 2

3 is a rear elevation oi" one ol the back pads; Fig. l is a longitudinal section through such back pads; and Figs. 5, G and 7 are details of a front pad adjusting means.

The back spring 10, preferably a. broad, thinspring-metal strap, connects at opposite ends with the back pads 11, to which are connected the side springs 12, each preferably a spring` shaped in suite sweeping curves with a downturn/ed side springs may pass over the hips toabout the areas t'or front pad pressure application. The angle of the side springs to the back spring may be varied as follows: Each back pad involves a cupped base plate 14 with an out-turned smoothly curved flange 15, the surface oi the base plate for contact with the wearer being by a leather piece 16 or a piece suitable material suitably gathered over the flanged edges and into the inside of the cup-like plate. he cover may be held in place in any suitable fashion as by a puclrer-spring (not shown) Cementing. or the pressure of the complemental cover plate to be described. Preferably the flange 15 is cut away as at 17 at a suitable point to re- Speei'oation of Letters Patent.

kPatented Mar. 1919. Serial No. 291,699.

ceive and position the relatively thick and narrow side spring7 and at its center it is countersunk as at 18 to receive exteriorly the shallow head of a bolt 19 soldered or otherwise suitably secured in the base plate and interiorly to provide a central boss.

ver this bolt is placed an apertured cupped coverplate 20, iaving an edge iiange 21 to en ter inside of the flange 15 of th t is ange 21 being notched as at 22 and 23 to receive the back band 10 and the side spring 12 and give deiinite position to their points of egress from the pad. At the center the cover plate is countersunlr as at 21- suflicient area to receive extet 25 and interiorly to lorin a flat-topped boss. The side spring arm 12 is provided with a series of holes 26 to receive be assembled with the bolt engaging any one ol the holes of the side spring and any slot of the back strap7 for length.-adjustment and` rocking on the edge oi co er-plate notch .22 to bring the bolt 19 to different positions in spring-slots 27-the back strap may have its angular relation to the side spring 12 varied through a considerable range, adequarte for vertical adjustment purposes to bring the front pads to just the proper elethe desired length and angle have been determined the nut 25 is tightthe two plates.

Each front pad as illustrated in Figs. 2 and 5 to 7, preferably comprises a yielding other suitable material,

out-turned flange or lip 32 (the recess being formed of corresponding shape), and having also a central screw-threaded hub or boss 33. When the base plate 31 is seated in the body 30, the body material extends baclr in a ayer 84E into the!Y interior of the slightly i certainty and lateral ad-j ustinent'.

springiness of the coter plate, or the springiness ot the layer 3a or (preferably, and as herein shown) by both these spring elements, the center ot the cover plate is resilient enough for spring-clutch purposes. the center ot' such plate are made a series of clutch-tooth-indentations 37, and for cooperation therewith l arrange a sheet-meta companion member or saddle 38 with a circle of projecting teeth 89, out-pressed therefrom, this member having at one edge upturned lugs 40 to straddle the downturned end 13 of the side spring 12 so that the saddle may not turn on the spring-arm. The coacting members are suitably apertured to receive a retaining screw 4l, and the end ot the spring arm l2 has'a plurality ot apertures l2 any one of which may receive the screw, for lengthadjustment ot the pad on the arm.- A connecting Vstrap 43 is used to prevent the pads from spreading apart. The construction and arrangement ot the parts in such that by extreme adjustment o'l' the screw the parts may be immovably secured together, but in practice the adjustment is preferably such that the pad will be adequately held against accidental displacement while capable by manipulation et rotary adjustment, the pad snapping trom point to point as it is rotated, With the plate 35 yielding so that the indentations V37 may ride over the teeth 39. Y

The desirable tacilityot adjustment, with ot maintenance o adjustment, will and the simplicity and economy 'from a structural point will be d by those skilled in the art. herein described in some embodiment of my invention, it will be understood that in some features departures may e made trom the specilic structure shown without departure from the spirit ot my invention and within the scope of the appended claims.'

That l claim is:

l. A truss having a back spring, back pads, Vside 'springs and front pads, one ot said baclr pads comprising Jfront and baclr plates, one thereot having notched edges to relatively position the points ol'. egress ot be apparent, of the device clearly understoo While l have detail a particular the-back and side springs, and a bolt for connecting said plates, one of said springs being connectible with said lbolt tor longitudinal adjustment and the other conncctible with said bolt for lateral adjustment.

2. A truss having a bachv spring, back pads, ones-aid andV side a -boltY tor connecting said said spring 4members being connectible with said boltV tor longitudinal `e. lAtruss having a pads,

Ar ound p lsaid back spring' member ,and

baclr spring, baclr i Lacasse side springs and' iront pads, one 'ot baclr pads comprising 'liront and bach one thereot having notched edges to relatively position the points ot egress et the back and side springs, and a bolt tor connecting said plates, one'o'l said members being connectible with said boltpicor lateral adjustment and said members being capable oit connection in fixed relation by the tightening ot the bolt.

ln a truss, the Combi-nation o'lV a relatively broad thin back-spring having a plurality of slots extending transversely near its end, a relatively narrow thiclr side spring having a pluralityf ol': apertures near its end, and a baclr pad ing the two comprising a base plate, a-cover plate, said plates having interiitting Jflanges suitably notched tor'passage of the said springs, and a bolt connecting said plates and passing through selected ones ot the slots and holes in the said two springs, tor adjustment ot the springs as to extension and angle. l

5. In' Va truss, the combination with a spring arm, ot a 'iront pad comprising a body, a base plate attached thereto, a cover pl ate yieldingv with respect to the base plate and having a toothed portion, passing through the toothed plate and the spring arm, and a member encircling" said stem and'non-rotatably engaging the spring arm provided with a toothed portion coinplementary to thatV ot the pad-plate, said member Vbeing Vyieldingly confined between said'cover plate and the head oit said stem.

6. ln a truss, the combination with a spring arinoit a front pad comprising a resilient body, a base plate embedded in said body and at its outer side partly overlain by the resilient material, a cover plate bearing on the center overlying portion oit said resilient material and centrally yieldable with said plates,

respect to the base plate, a stein engaging cover plate and at its outer end `engaging' said spring arm, a saddle member surround ing said stem interposed between the spring arm and said cover plate and non-rotatable with respect to the spring arm, said meinber and cover plate having complementary toothed portions tor positioning them eiiectively inY desired angular relation, said cover plate yielding to permit the teeth to be snapped past each other.

7. .fi truss having a resilient back spring member, side springs connccted'to said back spring memberk and angularly adjustable with respect thereto, back pads intermediate trent padsV secured at :the torward ends :ot said side springs, and a strap vconnecting said iront paus. l

warren ii. isi'iiiaows.`

structure adj ustably connect,

a headed stein side springs, 

